Electric controller.



O. H. TOPGERSEN'.

ELECTRIC CONTROLLER.

APPLICATION FILED JUNE 11. 1917.

1,267,714. Patented May 28,1918.

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v fnuewrx g W Orne fflzzyaraem y W UNITED STATES PATENT OFFICE.

OBNE H. TOBGELSEN, OF CHICAGO, ILLINOIS, ASSIGNOiI 0F ONE-HALF TO FRANKA. B.

V HOLMES, OF CHICAGO, ILLINOIS.

ELECTRIC CONTROLLER.

Specification of Letters Patent.

Patented May 28, 1918.

To all whom it may concern:

Be it known that I, ORNE H. Toncnnsnn, a citizen of the United States ofAmerica, and a resident of Chicago, in the county of Cook, State ofIllinois, have invented certa n new and useful Improvements in ElectricControllers, of which the following is a specification.

This invention relates more especially to that type of electricalcontrolling mechanisms for compressed air apparatus, in which theattainment of a predetermined high pressure in the storage reservoirwill automatically open the electric circuit of the .operating motor,and in'which with a subsequent reduction of the pressure in saidreservoir to a predetermined low pressure will automatically close saidcircuit of the motor. And the present improvement has for its variousobjects:

To provide a structural formation and combination of parts whereby rapidfinal opening and closmg movements of the controlling switch of theelectric motor is attained in a simple and eflicient manner.

To provide a structural formation and arrangement of the operatingspring of the switch mechanism, by which the final opening and closingmovements of the controlling switch is effected in a powerful andeffective manner. All as will hereinafter more fully appear.

in associated re ation the electric switch mechanism and pneumatic motorby which said switch mechanism is automatically operated.-

2 designates an electric switch, preferably of the ordinary jack knifetype, mounted in an insulated manner on a horizontal extension orbracket 3 of the frame 1, and having the usual pivoted contact blade 4,as shown.-

5 designates an operating link pivoted to a vertical centrally arrangedpost or standard 6 on the main frame, with the free end of said linkhaving a slotted formation for operative engagement with a transversepin 7 carried by the free end of the pivoted contact blade 4 aforesaid.

8 designates an adjustable abutment screw carried by an overhangingportion of the post 6 aforesaid, and adapted to limit the degree ofupward movement .of the operating link 5 aforesaid.

9 designates a primary toggle link pivoted to the 0st 6 in adjacentrelation to the operating ink 5 aforesaid. The pivot axis of therespective links are preferably arranged in a horizontal plane as shown.Said primary toggle 9 extends in a direction away from the operatinglink 5 and intermediate of its length is formed with a rounded bearinghead 10 for operative engagement with the hereinafter described abutmentcollar of the pneumatic motor of the mechanism.

11 designates a secondary toggle link or member, of a U shape, andpivoted b means of its side arms to vertical side stan ards 12 of themain frame, with the pivot axis preferably in a plane cutting thevertical axis of the hereinafter described motor of the mechanism, andwith said axis preferably on a horizontal plane cutting the pivot axesof the operating link 5 and primary toggle link 9 aforesaid. Saidsecondary toggle link 11 is formed with a transverse head 13 at its freeend, and such head is in turn formed with an orifice adapted to receivethe operating link 5 aforesaid, and have operative engagement therewith.The said orifice is made of greater height than the vertical thicknessof the link 5, so that limited independent movement of the secondarytoggle link 11 in either direction, may take place, before operativeengagement with thelink 5 is attained.

14: designates an abutment toe pivoted to the transverse head 13aforesaid, and 15 designates an adjusting screw adapted to move saidabutment toe to and from the link 5 to vary the amount of the abovedescribed independent movement between the parts.

16- designates an elliptical spring, preferably formed of rod metal, andwhich at its respective ends has engagement with lateral pins or studs17 17 arranged near the outer or free ends of the respective primary andsecondary toggle links 9 and 11, aforesaid. With the describedarrangement of said toggle links, as the primary tog 1e link 9 is movedto a position in which t e respective 5 studs 17, 17 and the pivot axisof said primary toggle link are on a straight line, the said spring 16is drawn out and elongated against the normal resiliency of the spring,so that as the free end of the primary toggle 1e link 9 is moved a shortdistance beyond said 4 straight line, the spring will act to completethe movement of the two toggle links 9, 11 in a rapid and forciblemanner, and in so doing will cause a very rapid and eflicient opening 15orclosin of the switch 2, in accordance with the irection in which themechanism is operated.

18' designates the casing of the pneumatic motor above referred to,fixedly associated with the frame 1, and preferably comprising a pair ofcup-shaped sections between which a piston diaphragm 19 is secured inany usual manner.

20 designates a: vertical stem or post fixed at its lower end in theupper section of the motor casing 18 aforesaid, and having its upper endscrew threaded for the reception of the adjusting nut'21 of the upperabutment collar 22 of the mechanism,

3. 23 designates the lower abutment collar sliding upon the verticalpost 20 and formed with a peripheral groove for operative engagementwith the circularly enlarged head 10 of the primary toggle link 9heretofore described. Said lower abutment collar 23 also has operativeengagement with the piston diaphragm'19 by means of a circular bearinghead or disk 24 resting on the upper surface of said diaphragm andprovided 40 with a series of studs 25 extending through orifices in theupper section of the motor casing 18 and having bearing engagementbeneath said lower abutment collar 23 to effeet an upward movement ofthe same in unison with that of said piston diaphragm 19.

26 designates a spring, preferably of the spiral compression type shown,arranged to encircle the vertical post 20, with its respective endsabutting against the upper and lower abutment collars 22, 23 aforesaid.The tension of said spring 26, is capable of adjustment by the adjustingnut 21, in order that said spring will operate at any predeterminedpressure beneath the piston dia- 56 phragm 19, to cause the initialmovements of the mechanism heretofore described, in either direction.

While the present mechanism is primarily intended for electric switchopening and 60 closing operations in connection with compressed airapparatus, the invention is capable of application to said compressedair apparatus in other ways, and as illustrative of such differentapplication, the secondary toggle link 11, is shown in Fig. 3 as havingoperative association with the stem of a re llef valve 27 arranged in abranch pipe of the pipe line connection between the air compressor andthe inlet check valve of the storage reservoir of such compressed airapparatus, The arrangement is adapted to open sa d valve 27 and relievesaid pipe line connection from pressure, as the present switch mechanismoperates to open the circult of the electric motor of the apparatus, andso that in a subsequent starting of said electric motor there Will bean. absence of back pressure on the air compressor and in consequence aneasy starting of the electric motor is assured. 30

Having thus fully described my said invention what I claim as new anddesire to secure by Letters Patent, is

1. In an electric controller of the type herein described, thecombination of a frame, a primary toggle link and a secondary togglelink pivoted to said frame with their pivots in adjacent relation, aspring having an elliptical form and attached at its respective ends tothe toggle links aforesaid, a collar having operative engagement withthe primary toggle link, a spring adapted to move said collar in onedirection, and a power means adapted to move said collar in an oppositedirection, substantially as set forth.

2. In an electric controller of the type herein described, thecombination of a frame, an electric switch, a switch operating link, aprimary toggle link, a secondary toggle link, the series of linksbeingpivoted to said frame in adjacent relation and on an approximatelycommon plane, the secondary toggle link having operative connection withthe switch operating link aforesaid, a tension spring attached at itsrespective ends to the toggle links aforesaid, a collar having operativeengagement with the primary toggle link, a spring adapted to move saidcollar in one direction, and a power means for moving said collar in theopposite direction, substantially as set forth.

3. In an electric controller of the type, herein described, thecombination of a frame, an electric switch, a switch operating link, aprimary toggle link, a secondary toggle link, the series of links beingpivoted to said frame in adjacent relation and on an approximatelycommon plane, the secondary toggle link having operative connection withthe switch operating link aforesaid by means permitting limitedindependent movement between the parts, a tension spring attached at itsrespective ends, to the toggle links aforesaid, a collar havingoperative engagement with the primary toggle link, a spring adapted tomove said collar in one direction, and a power means for moving saidcollar in the opposite direction, substantially as set forth.

4. In an electric controller of the type described herein, thecombination of a frame, an electric switch, a switch operating link, aprimary toggle link, asccondary toggle link, the series of linksbeingpivoted to said frame' in adjacent relation and on an approximatelycommon plane, the secondary toggle link having operative connection withthe switch operating link aforesaid'by means permitting limitedindependent movement between the parts, means for adjusting the amountof said independent movement, a tension spring attached at itsrespective ends to the toggle links aforesaid, a collar having operativeengagement with the primary toggle link, a spring adapted to move saidcollar in one direction, and a power means for moving said collar in theopposite direction, substantially as set forth.

5. In an electric controller of the type herein described, thecombinationof a frame, an electric switch, a switch operating link, aprimary toggle link, a secondary toggle link, the series of links beingpivoted to said frame in adjacent relation and on an approximatelycommon plane, the secondary toggle link having a cross head formed withan enlarged orifice for the reception of switch operating link aforesaidand permitting limited independent movement between the parts, a tensionspring attached at its respective ends to the toggle links aforesaid, acollar having operative engagement with the primary toggle link, aspring adapted to move said collar in one direction, and a power meansfor moving said collar in the opposite direction, substantially as setforth. 6. In an electric controller of the type herein described, thecombination of a frame, an electric switch a switch operating link, aprimary toggle link, a secondary toggle link, the series of links beingpivoted to said frame in adjacent relation and on an approximatelycommon plane, the secondary toggle link having operative connection withthe switch operating link aforesaid by means permitting limitedindependent movement between the parts, means for adjusting the amountof said independent movement, the same comprising an abutment toepivoted on the secondary toggle link and a screw for efi'ecting aturning adjustment of the toe, a tension-spring attached at itsrespective ends to the toggle links aforesaid, a collar having operativeengagement with the primary toggle,link, a spring adapted to move saidcollar in one direction, and a power means for moving said collar in theopposite direction, substantially as set forth.

7. In an electric controller of the type herein described, thecombination of a frame, an electric switch, a switch operating link, aprimary toggle link, a secondary toggle link,

the series of links being pivoted to said frame in adjacent relation andonan approximately common plane, the secondary toggle link havin'goperative connection with the switch operating link aforesaid, a springhaving an elliptical form and attached at its respective ends to thetoggle links aforesaid, a collar having operative engagement with theprimary toggle link, a spring adapted to move said collar in onedirection, and a power means adapted to move said collar in the oppositedirection, substantially as set forth.

8. In an electric controller of the type herein described, thecombination of a frame, an electric switch, a switch operating link, aprimary toggle link, a secondary toggle link, the series of links beingpivoted to said frame in adjacent relation and on an approximatelycommon plane, the secondary toggle link having operative connection withthe switch operating link aforesaid by means permitting limitedindependent movement between the parts, a spring having an ellipticalform and attached at its respective ends to the toggle links aforesaid,a collar havlng operative engagement with the primary toggle link, aspring adapted to move said collar in one direction, and a power meansadapted to move said collar in the opposite direction, substantially asset forth.

9. In an electric controller of the type herein described,thecombination of a frame, an electric switch, a switch operating link, aprimary toggle link, a secondary toggle link, the series of links beingpivoted to sald frame in adjacent relation and on an approximatelycommon plane, the secondary toggle link having operative connection withthe switch operating link aforesaid by means permitting limitedindependent anovement between the parts, means for adjusting the amountof said independent movement, a spring having an elliptical form andattached at its respective ends to the toggle links aforesaid, a collarhaving operative engagement with the toggle link, a spring adapted tomove said collar in one direction, and a power means adapted to movesaid collar 1n the opposite direction, substantially as Set forth.

Signed as Chicago, Illinois, this 7th day

